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<?php function foo(): resource { return fopen('/tmp', 'r'); } foo();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/h3QkW
function name:  (null)
number of ops:  3
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                                   'foo'
          1        DO_FCALL                                          0          
          2      > RETURN                                                       1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/h3QkW
function name:  foo
number of ops:  8
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                                   'fopen'
          1        SEND_VAL                                                     '%2Ftmp'
          2        SEND_VAL                                                     'r'
          3        DO_ICALL                                             $0      
          4        VERIFY_RETURN_TYPE                                           $0
          5      > RETURN                                                       $0
    6     6*       VERIFY_RETURN_TYPE                                           
          7*     > RETURN                                                       null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.5.0


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